641625707526047 has 2 divisors, whose sum is σ = 641625707526048. Its totient is φ = 641625707526046.

The previous prime is 641625707526019. The next prime is 641625707526103. The reversal of 641625707526047 is 740625707526146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 641625707526047 - 2²⁰ = 641625706477471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641625707526547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320812853763023 + 320812853763024.

It is an arithmetic number, because the mean of its divisors is an integer number (320812853763024).

Almost surely, 2^{641625707526047} is an apocalyptic number.

641625707526047 is a deficient number, since it is larger than the sum of its proper divisors (1).

641625707526047 is an equidigital number, since it uses as much as digits as its factorization.

641625707526047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 118540800, while the sum is 62.

Subtracting 641625707526047 from its reverse (740625707526146), we obtain a palindrome (99000000000099).

It can be divided in two parts, 64162570 and 7526047, that added together give a palindrome (71688617).

The spelling of 641625707526047 in words is "six hundred forty-one trillion, six hundred twenty-five billion, seven hundred seven million, five hundred twenty-six thousand, forty-seven".